Cisco Firewall :: ASA 5550 Inside Interface Hangs
Apr 24, 2012
the inside interface on our primary ASA seemed to "hang". It dropped all the packets it received. Because the interface didnt go down, failover didn't happen. Device's info;
-Cisco Adaptive Security Appliance Software Version 8.2(3)
-Device Manager Version 6.3(3)
-Hardware: ASA5550, 4096 MB RAM, CPU Pentium 4 3000 MHz
-Internal ATA Compact Flash, 256MB
-BIOS Flash Firmware Hub @ 0xffe00000, 1024KB
I attached a capture picture shows that traffic didnt go to the roof when the issue happened. Why the interface would "freeze" randomly?
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Feb 4, 2010
When I try to boot my ASA5550 it hangs at "booting system please wait". I have tried to reseting the ASA but this doesn't work. what to try as I cannot get to the rommon.
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Jun 16, 2011
I've a Cisco 5550 which hangs on powering up and stays at " Booting System, please wait..." forever and it has a flashing green Status LED.
The steps I've taken so far are:
1. Consoled with a different computer and tried to send the break signals (didn't work)
2. Open up the unit tried to remove the RAM's and reseated them again.
3. Taken out the CMOS battery on the board and replaced it with the new one (no luck still)
What is the next step, or shall I assume that the unit is dead.
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May 13, 2011
I have ASA5550 ruuning Version 8.3(1) with inside and outside interfaces as below [code] On the inside : I have a server (10.20.10.36) that need to be accessed from an outside host (Y.Y.131.34) , so I have the below NAT/ACL rules. [code] is it right that I have to add two ACL entry for outside host to the NATed IP of the inside server , then again add another ACL entry from the same outside host to the private IP of my inside server o get this communication done?
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Mar 18, 2013
I've got a ASA 5550 firewall interface failover issue. (File attached).
when I shut down the inside interface Gi 1/1 of the left firewall(Active firewall), It failed to failover. but when I shut down the Gi 1/12 of the Core 1 switch, The firewall failover very well.
I followed this guide but I was not able to failover. [URL]
how can I configure so that when the Gi 1/1 or Gi 1/0 interface goes down, it can failover ? Code...
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Mar 16, 2012
I cannot get this to work properly and I've even had a Cisco engineer from TAC set-this up... and it literally broke my inside network. I have a VPN range of addresses..x.x.x.x on the Outside that needs access to a server on the Inside at y.y.y.y. HTTPS/443 connectivity. I need to NAT my VPN subnet/pool in order to talk to the inside host, as that host will not accept traffic from my VPN subnet, but obviously, will accept traffic from Inside my private network.
The Cisco tech entered the following static NAT statement to "fix" the problem - nat (outside,inside) source static VPN Inside-Network destination static Host-y.y.y.y Host-y.y.y.y For whatever reason, whenever this is configured on my ASA 5550 v8.3(2)25 the Inside interface starts proxy arping and assigns all IP addresses on my private network with the MAC address of the Inside interface.
The y.y.y.y is on a remote, routed network within my private, corporate MPLS network. My Inside private network (Inside-network shown in the static NAT above) is x.x.x.x. Not sure why this happens, but it kills my entire network and I have to jump through hoops to quiesce the network and get everything back to normal.I've tried to Dynamic-PAT/hide the VPN range behind the Inside interface through ASDM and that seems to do nothing.The NAT statement above will break my network. How to NAT this connection without killing my Inside network? Or, on how to properly hide my VPN subnet/pool behind my Inside interface and back to the VPN subnet/pool.
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Jan 23, 2012
We have ASA 5550, I have a portal server in the dmz which is natted statically to a public ip address for port 443. The application works fine from outside world. The server is also nated with a dynamic nat from inside to dmz and when I hit on the dmz ip from my inside it works fine.
The requirement for us is that the users sitting behind the inside (i.e. LAN) should access the server on the public ip address and not thru the dmz.
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Oct 9, 2011
I have Pix 501 firewall and I'm just configuring the device for "Email Server" to allowing POP/SMTP.
Inside Interface Address: 132.147.162.14/255.255.0.0
Outside Interface Address: ISP provided IP address
My question is can my traffic goes from inside interface to outside interface? (because the inside interface address not from 10.0/172./192.168 private address)Also I'm allowing internet from this email server (132.147.162.14) so what my access list to be configured? and what my subnet mask shoud be there?
Pix(config)#access-list outbound permit tcp 132.147.162.14 255.255.0.0 any eq 80
Pix(config)#access-list outbound permit udp 132.147.162.14 255.255.0.0 any eq 53
Pix(config)#access-group outbound in interface inside
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Oct 25, 2011
Is it possible to use ports from 2 SFP and 2 RJ45 Interface on ASA 5550 Module 1.
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Nov 12, 2011
I am normally only doing IOS config. I have little problem when trying to setup this unit.,It boots ASA software 8.0.4 fine.,When i go to enable mode and into configuration mode and try to configure ip on an interface i have a problem.,
ciscoasa(config)# intciscoasa(config)# interface manciscoasa(config)# interface management 0/0ciscoasa(config-if)# ?,Interface configuration commands: default Set a command to its defaults description Interface specific description dhcp Configure parameters for DHCP client duplex Configure duplex operation exit Exit from,interface configuration mode Interactive help for interface subcommands no Negate a command or set its defaults shutdown ,Shutdown the selected interface speed Configure speed operationciscoasa(config-if)#
I did try to upload the new software 8.4.2 from rommon using TFTP. ,It boots 8.4.2 fine, but have same problem as in 8.0.4.,I did try to create a user haveing priv 15 and logging on as that user. It gives the same.,The firewall is not in transparent mode.
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Aug 2, 2011
I've recently set up a LAN-2-LAN VPN tunnel to a 3rd party service provider who uses RFC 1918 private addressing internally and cannot perform NAT on their side of the tunnel. In order to avoid conflicts with our address space I've had to implement DNAT for the address on the 3rd party network that users at my end must access. The tunnel terminates at my end on the outside interface of an ASA-5550 running 8.4.2. While the ASA has 8 interfaces at security levels between 0 and 100, DNAT only need occur for traffic flowing from inside (100) to outside (0).
The following (redacted) addressing applies:
Address of the server on the 3rd party provider network: 192.168.2.155
Mapped address of server as seen on the network at my end: 10.168.2.155
I've currently implemented DNAT using object NAT as follows:
object network remote-server
host 192.168.2.155
nat (outside,inside) static 10.168.2.155
This works as expected, however in examples and discussion I've seen, it appears that the typical way to configure NAT for this scenario is with manual NAT as follows:
object network remote-server
host 192.168.2.155
object network remote-server-mapped
host 10.168.2.155
nat (inside,outside) source static any any destination static remote-server-mapped remote-server
Is there any reason why I should consider using the manual NAT method rather than the object NAT method in this scenario?Are there any technical reasons why using object NAT in this manner should be avoided?
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Nov 29, 2011
I am currently doing some research (for my employer) into creating multi-context sub-interfaces on a Transparent ASA 5550.
I have not been able to find any details on this subject which state it is or it is not possible. This will be used for Syslog logging.
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Oct 12, 2011
I am switching a switch connecting to the ASA5550 tomorrow. My current switch is using fiber connecting to the ASA. The new one only support copper. If I switch between fiber to copper on the ASA (change media-type command on interface) will it cause a down time? I have VPN tunnel on the ASA and don't want the session to reset.
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Feb 19, 2012
I have a Cisco ASA 5505 in our office. We are currently using Interface 0 for outside and 1 for inside. We only have 1 Vlan in our environment. We have two three switches behind the firewall. Today the uplink to Interface 1, to the firewall, on the switch went bad. I want to setup a second inside interface on the firewall and configure it as failover incase this happens again. I want to attach it to the other switch. Can I do this? If so, what do I need to do? would it only be a passive/standby interface?
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Jul 14, 2011
I've recently upgraded my old firewall from a PIX to an ASA5505 and have been trying to match up the configuration settings to no avail. I have is that I can't ping the new firewall on it's inside interface, despite having "icmp permit any inside" in the running config. Secondly, the server I have on there ("Sar") can't connect out to the internet.I've included the ASA's running config incase anybody can see if something stands out. I have a feeling it's either not letting anything onto the inside interface, or there is no nat going on. Lastly (and possibly relevant), the firewall is actually going at the end of a vlan, which is different to the firewall's inside vlan number. I don't know if this is actually the problem because the server can't connect out even if connected directly into the firewall.
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Jan 17, 2013
I am trying to upgrade a Cisco ASA over an IPSEC VPN tunnel. My FTP server is on the remote side of the VPN tunnel but I am initiating connections from the inside interface of the firewall. I am currently managing the Firewall over the VPN via it's inside interface (using the management-access inside) command. When I try and update via FTP, the connection is going straight out the outside interface (and not across the VPN tunnel) I have tried upgrading via TFTP but it keeps stopping randomly with (unspecified error) I normally upgrade via FTP though but it's not working in this instance. Essentially what I am asking, is is there an equivalent command for FTP that there is for TFTP: tftp-server interface ip anyconnect I need the connections to originate from the inside interface so they traverse the VPN. I am running 7.2.3?
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May 10, 2011
I have a new ASA 5505 and all is working fine, I can CLI and ASDM into it, but just can't ping the inside interface, do I need to enable a feature to make this work somehow?
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Apr 23, 2012
I am connecting the inside interface to an upstream switch and therefore will need to assign a static IP address to the inside address as I did below:
#sho int ip brief
Vlan1 123.123.123.123 YES manual up up
I will also use this to manage the ASA. I am having a problem with the network configuration of the inside interface as I can't ping the gateway and/or the in IP of the inside interface.Do I need to add any routes?
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Jun 7, 2013
I have a Cisco 5512 x Firewall connected with Cisco Layer 3 switch 3750.I have two different WAN connections, one for Data and one for voice. Cisco Layer 3 switch is configured with 2 different VLAN's one for data & other is Voice Vlan. Switch is providing DHCP to computers and IP phones. Voice Pool 192.168.10.0/24 Vlan10 and Data pool 192.168.20.0/24 Vlan20.I need to route my data & voice traffic separately. Cisco ASA is connected with two different ISP's. So, how can I do this configuration so that Voice and Data traffic will route separately.
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Apr 13, 2013
I ran into a very strange icmp ping issue. The network has been working fine other than the issue listed below, L2L VPN works fine and all three data centers can access each other via L2L VPN.I have three ASA5510. [code]
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Feb 5, 2012
i have here a ASA 5510 sec k9.
I build a Config with a DMZ,INSIDE and OUTSIDE Interface. My Plan is to use the IP-Address of the OUTSIDE Interface with PORT to setup a HTTP Server In the DMZ
But my Config doesn't work. And I have no Plan why .....
The Inside Interface have to work normal. The Traffic to the Internet is TRiggert from Inside with Dynamic PAT
ciscoasa(config)# exit
ciscoasa# show run
: Saved
:
ASA Version 8.4(1)
[Code].....
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Dec 12, 2011
I have an ASA 5505 that I'm trying to set up a guest network on. I've configured an interface as a trunk and allowed the 2 vlans but I'm not getting any layer 3 to it. The switch connected to it is a 3560 and port is configured as a trunk with the same vlans.
I can't ping the ASA inside interface but I see its MAC address in the swtich's table.
[code]....
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Mar 7, 2012
I'm trying to NAT SIP registration from OUTSIDE interface to Inside interface on ASA
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Apr 4, 2012
The ASA is configured in very simple transparent mode. As desired, traffic can flow in each direction between inside and outside. I can manage the ASA via console and direct connection to the management interface. The problem is that I cannot ping or ssh to the ASA via the inside interface. I need to be able to manage the ASA from any PC on the inside LAN. I suspect I am missing some easy aspect of the configuration but after a lot of hours I'm about at the end of my patience with it. Here is what I believe to be the relevant parts of the config.
ASA Version 8.2(1)
!
firewall transparent
hostname issr1
enable password 2alej83t5cqT0FWd encrypted
passwd 4kleUY438I93.4ljdh encrypted
names
[code]....
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May 13, 2013
I did this on the PIX and it worked like a charm, but I am having some difficulty translating the configuration to an ASA.
In the PIX I performed NAT on outside traffic to a specific inside host (web server) to map to the inside interface so that return traffic would go to the same firewall the traffic came in through, The reason for this configuration was because the gateway of last resort was a different firewall and not the firewall the traffic came in through.
Now to further give you some history, the gateway of last resort is an ASA running 9.1 (Now), prior to that it was a PIX with v8.0(4), traffic to the aforementioned web server came in through the gateway of last resort), which at the time was the PIX.
However, for some reason after swapping the PIX for an ASA (same rules, updated NAT rules for 9.1) access to the same web server is slow. Not sure why, but it’s the case. To alleviate the slowness we experienced, and until I can figure out why this occurs on the ASA, I placed a PIX on the network that only listens for traffic for the web server in question. On this PIX I map to the inside interface so that traffic flow works and external clients can access the web server with no issues.
So two questions, one I would like to use the configuration I have for the web server on the PIX on the ASA to see if that setup on the ASA works better, but having difficulty translating the rules to the ASA.
Second question, (Slow access with ASA to a web server, but fast with PIX to the same web server)?
P.S. Addresses in attached picture config are not real, but I know what they translate to.
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Jun 28, 2012
we have a server that has an outside IP and an inside IP. It's inside ip is 192.168.222.30/24 and it's outside IP is 199.204.50.2/29. The connection to this server from the outside is perfectly fine, but access from inside users to the NAT'd IP which is 199.204.50.2/29 is having issues, however, access to the inside IP works fine (this part makes sense)Will It be a must to set the inside DNS A record to the inside IP and not the outside IP, or can users on the inside interface access the NAT'd IP which is assigned to the server
LAN(192.168.222.0/24)<=====>InsideASAOutside<=====>(Server with NAT IP 192.168.222.30/24, it's also physicall assigned to this server).This is an ASA 5510 with 8.4.
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Mar 31, 2013
I have a PIX 515e running version 7.2(4).I have 2 interfaces - DMZ3 (sec lvl 50) and LAB (sec lvl 100) behind the pix. There is also the OUTSIDE interface (sec lvl 0) which connects to the internet.In DMZ3 I have a webserver - x.x.124.217/24 (host is NATed via static command to public IP)In LAB I have a server - x.x.1.203/24 (entire range is NATed via NAT/Global statements to public IP)The server in LAB needs to access a webserver in DMZ3. From the internet both of these hosts have public addresses that are NATed into the inside addresses. I can reach the webserver from the internet, but not from the LAB interface.I think I have to add a static command so that the LAB host can access the DMZ3 host without accessing the internet.
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Oct 13, 2012
I need to configure a Cisco ASA5510.Connencted the a single interface I have a switch. To this switch (same VLAN) there are connected:
1. The Subnet of the main office (192.168.1.253)
2. A router (IP 192.168.1.254) that routes the traffic to a remote location (Subnet 192.168.8.0/24)
I have so allowed any traffic incoming to the inside interface as follows:access-list inside_access_in extended permit ip any any and I have permitted traffic intra interface as follows: same-security-traffic permit intra-interface. [code]Unfortunately I cannot RDP into that server. When I simulate the connection via Packet tracer, it tells me that the implicit deny on the bottom of the connections from "inside" (firewall) does not allow the connection. It sounds to me like that "same-security-traffic permit intra-interface" does work only if there are 2 interfaces and not a single one.Unfortunately I cannot just unplug the cable and connect it into another port as the ip is on the same subnet and I cannot configure the other end router.
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May 6, 2012
I have ASA5505 configured with internal network as 192.168.15.0 and default gateway 192.168.15.1 From the inside network, i'm able to access internet and able to ping all website (enabled ping). and all internel network devices can ping each other. Except i cannot ping my gateway (ASA5505) 192.168.15.1. I'm continously seeing this message on the log, when i tried to ping.. How to fix this?
Denied ICMP type=8, code=0 from 192.168.15.xxx on interface inside
replace xxx with my network devices that try to ping the gateway..I dont want outsiders ping my gateway, i need ping for inside internal network only.
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Mar 29, 2011
I have inherited an ASA 5520. In doing some auditing of the setup, I have noticed a Static Route that has the inside interface of the ASA as the Gateway IP. I am trying to understand the purpose of this route or why a route would be setup this way.
Example Static Route:
Inside 10.xx.31.0 255.255.255.0 10.xx.xx.10 (10.xx.xx.10 is the inside interface of ASA)
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Jul 21, 2012
We have a Cisco ASA 5505 (v7.2(3)) with a "fairly" normal configuration yet we have a problem where it appears UDP/53 traffic is denied on our inside network.
here is output from our sys log:
SyslogID Source IP Dest IP Description
305006 172.18.22.3 portmap translation creation failed for udp src inside:172.18.22.156/42013 dst inside:172.18.22.3/53
To give some clarification:
172.18.22.3 is one of our DNS servers
172.18.22.156 is a device we're experimenting with.
We've bypassed the Cisco by using a 4G wireless router with this same device - and it works flawlessly.Here is a [scrubbed] copy of our config. It is what I inherited from the previous admin - I'm not sure of all its finer points (I'm not Cisco certified -- perhaps I'm just certifiable.)
: Saved
:
ASA Version 7.2(3)
!
hostname [redacted]
[code].....
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Feb 12, 2013
Trying to add inside routes on an ASA 5505 to point traffic to another gateway for other connected networks is resulting in the following error 6Sep 16200 819:13:5810601510.184.236.1265003810.170.54.1823389Deny TCP (no connection) from 10.184.236.126/50038 to 10.170.54.182/3389 flags RST on interface insideI believe the problem is due to the Asymetric tcp connection and the ASA is dropping the connection because it only see one half of the traffic.Is there a way we can stop the firewall dropping the TCP connections on the inside interface? i've tried removing the threat managment which didnt work.Annoying thing is were putting the ASA 5505's in to replace old Watchguard soho firewalls only the watchguards forwarded the traffic no problem at all.
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Mar 9, 2011
administrator wants to manage ASA 5500 using inside interface.{telnet or ssh].Allowed telnet and ssh in ASA 5500 but unable to get access from administrator PC..Is there a way to do it without enabling NAT on the ASA? Will a specific rule on ASA allow adminstrator to access ASA 5500 inside interface via ssh or telnet?
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